Motor fuel



Patented Sept. 3, 1935 UNITED STATES MOTOR FUEL Julius F. l. Berliner and Richard W. Plummer, Wilmington, Del., aasignors to E. I. du Pont de Nemours 8:

Company,

corporation of Delaware No Drawing. Application April 16,1932, Serial No. 605,778

8 Claims. (01.44-9) This invention relates to liquid fuels and especially to fuels adapted for the operation of internal combustion engines.

An object of the invention is to provide a fuel comprising an admixture of liquid paraflln hydrocarbons, a lower boiling aliphatic alcohol, and an ingredient adapted to cause blending thereof.

It has previously been proposed to use the lower boiling aliphatic alcohols, methanol and ethanol, in admixture with liquid paraflin hydrocarbons, e. g. gasoline, kerosene, etc., as motor fuels. These alcohols, however, are generally miscible in only limited proportions with the liquid paraflin hydrocarbons. For example, at ordinary temperature, 15 C., a typical U. 8. nonpremium motor fuel, will dissolve not more than about 5.5% commercial anhydrous methanol.

According to the present invention stable fuel compositions comprise an admixture of gasoline, or equivalent liquid paramn hydrocarbons, a lower boiling alcohol, and a blending agent consisting of borneol or its isomer isoborneol.

For example, a fuel having the following composition is completely homogeneous at ordinary temperatures and develops no cloudiness or separatlon of ingredients down to 15 0.: U. S. non-premium motor gasoline 75 cc., methanol cc., and borneol 5 grams. contrasted with the foregoing, in the absence of a blending agent as little as about 2% by volume of methanol will produce cloudiness in the same gasoline at about 15 C.

It will be understood that the foregoing details may be varied without departing from the invention or sacrificing the advantages thereof. Thus varying amounts of the blending agent may be used depending upon the relative proportions of hydrocarbons and alcohol and the minimum temperature at whichit is desired that the mixture should be stable.

We claim: 5

l. A homogeneous fuel blend comprising a major part liquid paraflin hydrocarbons, a smaller part methyl alcohol, and a blending agent selected from the group consisting of bornecl and isoborneol.

2. A homogeneous fuel blend comprising a major part gasoline, a smaller part methyl alco- 1101, and a blending agent selected from the group consisting of bomeol and isoborneol.

3. A homogeneous fuel blend comprising about 15 75 parts by volume of gasoline, 20 parts methyl alcohol, and 5 parts borneol.

4. A homogeneous fuel blend comprising a major part liquid paraflin hydrocarbons, a smaller part methyl alcohol, and isoborneol as 20 a blending agent.

5. A homogeneous fuel blend comprising a major part liquid paraflin hydrocarbons, a smaller part methyl alcohol, and borheol as a blending agent.

6. A homogeneous fuel blend comprising a major part gasoline, a smaller part methyl alcoho1,-and isoborneol as a blending agent.

7. A homogeneous fuel blend comprising a major part gasoline, a smaller part methyl alco- I101, and borneol as a blending agent.

8. A homogeneous fuel blend comprising about 75 parts by volume of gasoline, 20 partsmethyl alcohol, and 5 parts isoborneol.

JULIUS F. T. BERImER. RICHARD W. PLUMMER. 

